The Hammond 197AA20 is a high-frequency reactor designed for demanding applications requiring high permeability and robust performance. Featuring a carbonyl iron powder core, this reactor is ideal for use in circuits operating up to 50KHz. Its rugged construction, including an aluminum base and stainless steel band, ensures durability in harsh environments. The open-style terminal provides maximum versatility in circuit design. With an inductance of 250mH and a self-resonant frequency of 1185.3 KHz, the 197AA20 is well-suited for various industrial and commercial applications.